Which of the following substrates will react by an E2 elimination the fastest? Hint: consider which places Br in the correct position (axial or equatorial) in the best chair conformation for the greatest amount of the time.
a. 
b. 
c. 
d. 
Homework Answers
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Which of the following substrates will react by an E2 elimination the fastest? Hint: consider which places Br in the cor...
Give the major elimination product of the following reaction. (CH3)3COK - Br heat - NH2 O-CH3...
Give the major elimination product of the following reaction. (CH3)3COK - Br heat - NH2 O-CH3 -SCH OH Give the major elimination product of the following reaction. ? NAOCH3 heat Br OH NH, OMe -CH3 0 Give the minor elimination product of the following reaction. NaOCH3 heat Br SCH ОН - CH3 NH2 We were unable to transcribe this imageThere is no reaction under these conditions or the correct product is not listed here. NH SCH3 Click if you would...
1. In the structure of the antibiotic Aztreonam illustrated below, how many nitrogen atoms have a...
1. In the structure of the antibiotic Aztreonam illustrated
below, how many nitrogen atoms have a sp2 hybridization
state?
2. What is the number of oxygen atoms on which the negative
charge will resonate by following relevant resonance structures?
(0,1,2,3,4 or 5)
3. Identify the stereochemistry of each of these double bonds
marked 1 and 2 in the structure below ((E) or (Z))
4. What is the absolute configuration of the following molecule?
(R/S)
5. Determine the relationship between these...
The rections above involve synthesis or reactions of alcohols and ethers. Identify the mechanism by which...
The rections above involve synthesis or reactions of alcohols
and ethers. Identify the mechanism by which they proceed from among
the mechanisms listed. Use the letters a - g for your answers.
a = Proton transfer b = Lewis acid/base c = Electrophilic
addition
d = E1 Elimination e = E2 Elimination f = SN1 Nucleophilic
substitution g = SN2 Nucleophilic substitution
a. )
b.)
c.)
d.)
We were unable to transcribe this imageH3C Br ње CH HaC Aqueous ethanol...
Draw a structural formula of the R configuration of the compound shown below. The energy difference...
Draw a structural formula of the R configuration of the compound
shown below.
The energy difference is kJ/mol.
In the more stable chair:
The vinyl(ethenyl) group is in the
_________axial,equatorial,both position.
The methyl group is in the
_________axial,equatorial,both position.
At 25°C the equilibrium percent of the more stable chair
conformation is approximately
_____60,65,70,75,80,85,90,95,>95.
Answers:
The energy difference is kJ/mol.
In the more stable chair:
The chloro group is in the
_________axialequatorialboth position.
The methyl group is in the
_________axial,equatorial,both, position.
At 25°C...
Which of the following would increase the proportion of a substitution reaction that proceeds via a...
Which of the following would increase the proportion of a substitution reaction that proceeds via a $ 2 mechanism, rather than S, 1? (choose all correct answers) Use a less reactive nucleophile. Use a more highly substituted alkyl halide. Increase the concentration of the alkyl halide. Increase the concentration of the nucleophile Which of the following reactions would most likely proceed via a SN 1 mechanism? (choose all correct answers) + CH3OH Br + HO- Br + CN + HBr...
1.1 In which of the following solvents would the reaction of 1-bromobutane with sodium azide,NaN3, proceed...
1.1 In which of the following solvents would the reaction of
1-bromobutane with sodium azide,NaN3, proceed the fastest?
a.aceticacid
b.ethanol
c.water
d.acetonitrile
1.2 Which of the following solvents is the best choice for the
reaction of 1-chlorohexane with sodium bromide?
a.dimethylsulfoxide
b.water
c.hexane
d.toluene,PhCH3
1.3 Which of the following is most likely to undergo
rearrangement during reaction with methanol?
1.4 Name which energy diagrams represents the course of an
exothermic SN1, SN2,E1, or E2 reaction?
1.5 Which of the following...
1. [10 pts] Consider the elimination reaction for the following alkyl halide with sodium methoxide in...
1. [10 pts] Consider the elimination reaction for the following alkyl halide with sodium methoxide in methanol (Na* OCH, CH,OH). CH NaOme MeOH CH Compound A Problem 2c Draw the major expected organic product (a) Redraw Compound A as seen in Viewpoint I below left as a Newman projection on the template provided in Problem 2a (below). Hint: Fill in missing Hs ar C2 and C3 to help you get started! (b) Rotate the C2 C3 bond to obtain the...
please help in all sections asap!! Provide the reagents necessary to carry out the following conversion....
please help in all sections asap!!
Provide the reagents necessary to carry out the following conversion. NO Br Choose the correct reagents for step 1. fuming H2SO4 Br2/ FeBr3 HNO3/ H2SO4 CH3Br / FeBr3 Choose the correct reagents for step 2 HNO3/ H2SO4 CH3Br/ FeBr3 fuming H2SO4 Br2/ FeBry Which one of the following substituents will direct the incoming group to the meta position during electrophilic aromatic substitution? -NO2 -CEN -CCl -COOH all of these O O Identify the electrophile...
please answer the following 15. Consider the MAJOR product outcomes when 8 reacts with Nal vs....
please answer the following
15. Consider the MAJOR product outcomes when 8 reacts with Nal vs. NaOH. Select the correct outcomes from the table. (Hint 1: for both Sn2 and E2 leaving group must be axial; for E2, the B-hydrogen must be 180° away from leaving group). (Hint 2: For 2 RX substrates, products depend on conjugate acid; i.e.strong acids have weak conj. bases compare to problem #20, 21). 8+ Nal yields products with --- ? 8 + NaOH yields...
____ 1. The diagram below represents serine, a polar, uncharged amino acid. Which functional group gives...
____ 1. The diagram below represents serine, a polar, uncharged
amino acid. Which functional group gives serine its
distinct property?
a. H3
b. CH2OH
c. –H
d. COO–
____ 2. The monomers shown below are monomers for which of the
following natural polymers?
a. polysaccharides
b. plastics
c. DNA
d. proteins
____ 3. Which of the following processes illustrates the production
of a protein?
a. specific code for amino acids --> amino acid chain -->
gene --> DNA --> specific...
Give the major elimination product of the following reaction. (CH3)3COK - Br heat - NH2 O-CH3 -SCH OH Give the major elimination product of the following reaction. ? NAOCH3 heat Br OH NH, OMe -CH3 0 Give the minor elimination product of the following reaction. NaOCH3 heat Br SCH ОН - CH3 NH2 We were unable to transcribe this imageThere is no reaction under these conditions or the correct product is not listed here. NH SCH3 Click if you would...
1. In the structure of the antibiotic Aztreonam illustrated
below, how many nitrogen atoms have a sp2 hybridization
state?
2. What is the number of oxygen atoms on which the negative
charge will resonate by following relevant resonance structures?
(0,1,2,3,4 or 5)
3. Identify the stereochemistry of each of these double bonds
marked 1 and 2 in the structure below ((E) or (Z))
4. What is the absolute configuration of the following molecule?
(R/S)
5. Determine the relationship between these...
The rections above involve synthesis or reactions of alcohols
and ethers. Identify the mechanism by which they proceed from among
the mechanisms listed. Use the letters a - g for your answers.
a = Proton transfer b = Lewis acid/base c = Electrophilic
addition
d = E1 Elimination e = E2 Elimination f = SN1 Nucleophilic
substitution g = SN2 Nucleophilic substitution
a. )
b.)
c.)
d.)
We were unable to transcribe this imageH3C Br ње CH HaC Aqueous ethanol...
Draw a structural formula of the R configuration of the compound
shown below.
The energy difference is kJ/mol.
In the more stable chair:
The vinyl(ethenyl) group is in the
_________axial,equatorial,both position.
The methyl group is in the
_________axial,equatorial,both position.
At 25°C the equilibrium percent of the more stable chair
conformation is approximately
_____60,65,70,75,80,85,90,95,>95.
Answers:
The energy difference is kJ/mol.
In the more stable chair:
The chloro group is in the
_________axialequatorialboth position.
The methyl group is in the
_________axial,equatorial,both, position.
At 25°C...
Which of the following would increase the proportion of a substitution reaction that proceeds via a $ 2 mechanism, rather than S, 1? (choose all correct answers) Use a less reactive nucleophile. Use a more highly substituted alkyl halide. Increase the concentration of the alkyl halide. Increase the concentration of the nucleophile Which of the following reactions would most likely proceed via a SN 1 mechanism? (choose all correct answers) + CH3OH Br + HO- Br + CN + HBr...
1.1 In which of the following solvents would the reaction of
1-bromobutane with sodium azide,NaN3, proceed the fastest?
a.aceticacid
b.ethanol
c.water
d.acetonitrile
1.2 Which of the following solvents is the best choice for the
reaction of 1-chlorohexane with sodium bromide?
a.dimethylsulfoxide
b.water
c.hexane
d.toluene,PhCH3
1.3 Which of the following is most likely to undergo
rearrangement during reaction with methanol?
1.4 Name which energy diagrams represents the course of an
exothermic SN1, SN2,E1, or E2 reaction?
1.5 Which of the following...
1. [10 pts] Consider the elimination reaction for the following alkyl halide with sodium methoxide in methanol (Na* OCH, CH,OH). CH NaOme MeOH CH Compound A Problem 2c Draw the major expected organic product (a) Redraw Compound A as seen in Viewpoint I below left as a Newman projection on the template provided in Problem 2a (below). Hint: Fill in missing Hs ar C2 and C3 to help you get started! (b) Rotate the C2 C3 bond to obtain the...
please help in all sections asap!!
Provide the reagents necessary to carry out the following conversion. NO Br Choose the correct reagents for step 1. fuming H2SO4 Br2/ FeBr3 HNO3/ H2SO4 CH3Br / FeBr3 Choose the correct reagents for step 2 HNO3/ H2SO4 CH3Br/ FeBr3 fuming H2SO4 Br2/ FeBry Which one of the following substituents will direct the incoming group to the meta position during electrophilic aromatic substitution? -NO2 -CEN -CCl -COOH all of these O O Identify the electrophile...
please answer the following
15. Consider the MAJOR product outcomes when 8 reacts with Nal vs. NaOH. Select the correct outcomes from the table. (Hint 1: for both Sn2 and E2 leaving group must be axial; for E2, the B-hydrogen must be 180° away from leaving group). (Hint 2: For 2 RX substrates, products depend on conjugate acid; i.e.strong acids have weak conj. bases compare to problem #20, 21). 8+ Nal yields products with --- ? 8 + NaOH yields...
____ 1. The diagram below represents serine, a polar, uncharged
amino acid. Which functional group gives serine its
distinct property?
a. H3
b. CH2OH
c. –H
d. COO–
____ 2. The monomers shown below are monomers for which of the
following natural polymers?
a. polysaccharides
b. plastics
c. DNA
d. proteins
____ 3. Which of the following processes illustrates the production
of a protein?
a. specific code for amino acids --> amino acid chain -->
gene --> DNA --> specific...
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